Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(42), С. 22551 - 22589
Опубликована: Янв. 1, 2023
Our
analysis
of
the
current
literature
shows
that
advances
in
extractive
technologies
for
U/Li
recovery
lie
at
intersection
between
molecular
simulation,
nanotechnology
and
materials
science,
electrochemistry,
membrane
engineering.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(23)
Опубликована: Март 13, 2023
Dynamic
covalent
chemistry
(DCC)
opens
up
a
fascinating
route
for
the
construction
of
well-organized
supramolecular
architectures,
starting
from
organic
molecular
cages
to
crystalline
macromolecular
frameworks
(COFs).
Herein,
first
time,
we
have
manifested
facile
room-temperature
DCC-directed
transformation
discrete
imine
cage-to-COF
film
at
liquid-liquid
interface.
The
unfolding
cage
leading
generation
intermediates,
followed
by
their
interface-assisted
preorganization
and
subsequent
growth
COF
film,
are
elucidated
through
detailed
spectroscopic
microscopic
investigations.
interfacial
provides
faster
fabrication
free-standing
films
with
high
porosity
crystallinity,
demonstrating
excellent
performance
towards
sieving
solvent
permeance.
Thus,
current
study
new
structural
interconversion
between
two
entities
diverse
dimensionality
employing
DCC
confined
ACS Materials Letters,
Год журнала:
2024,
Номер
6(5), С. 2007 - 2049
Опубликована: Апрель 17, 2024
Hydrogen
peroxide
(H2O2),
a
valuable
chemical,
is
widely
used
as
powerful
oxidizing
agent
in
chemical
synthesis,
pharmaceuticals,
medical
disinfection,
and
environmental
treatment
industries.
Currently,
over
95%
of
H2O2
produced
industrially
using
the
anthraquinone
process,
which
associated
with
its
high
energy
consumption
hazardous
byproducts.
Therefore,
photochemical
synthesis
from
water
oxygen
covalent
organic
framework
based
photocatalysts
have
attracted
considerable
attention.
This
review
aims
to
outline
recent
achievements,
challenges
future
prospects
COFs
heterogeneous
for
sustainable
generation.
We
summarize
chronological
development
COFs,
different
mechanisms
involved,
detailed
experiments
quantification
methods
photocatalytic
The
puts
forward
an
outlook,
highlighting
advantages
limitations
anticipate
that
this
will
provide
insight
into
current
progress
inspire
next-generation
production.
Abstract
Rising
carbon
dioxide
(CO
2
)
levels
in
the
atmosphere
are
recognized
as
a
threat
to
atmospheric
stability
and
life.
Although
this
greenhouse
gas
is
being
produced
on
large
scale,
there
solutions
reduction
indeed
utilization
of
gas.
Many
these
involve
costly
or
unstable
technologies,
such
air‐sensitive
metal–organic
frameworks
(MOFs)
for
CO
capture
“non‐green”
systems
amine
scrubbing.
Conjugated
microporous
polymers
(CMPs)
represent
simpler,
cheaper,
greener
solution
utilization.
They
often
easy
synthesize
at
scale
(a
one
pot
reaction
many
cases),
chemically
thermally
stable
(especially
comparison
with
their
MOF
covalent
organic
framework
(COF)
counterparts,
owing
amorphous
nature),
and,
result,
cheap
manufacture.
Furthermore,
surface
areas,
tunable
porous
chemical
structures
mean
they
reported
highly
efficient
motifs.
In
addition,
provide
dual
pathway
utilize
captured
via
conversion
electrochemical
into
industrially
valuable
products.
Recent
studies
show
that
all
attractive
properties
can
be
realized
metal‐free
CMPs,
presenting
truly
green
option.
The
promising
results
two
fields
CMP
applications
reviewed
explored
here.
iScience,
Год журнала:
2024,
Номер
27(2), С. 108993 - 108993
Опубликована: Янв. 23, 2024
The
rapid
development
of
nuclear
energy
posed
a
great
threat
to
the
environment
and
human
health.
Herein,
two
hydroxyl-functionalized
hyper-crosslinked
polymers
(PIHCP-1
PIHCP-2)
containing
different
electron
active
sites
have
been
synthesized
via
Friedel-Crafts
alkylation
reaction
polyimides.
resulting
showed
micro/mesoporous
morphology
good
thermal
chemical
stability.
Rely
on
high
porosity
multi-active
sites,
PIHCPs
show
an
ultrahigh
iodine
uptake
capacity
reached
6.73
g
g−1
removal
efficiency
from
aqueous
solution
also
reaches
99.7%.
Kinetic
analysis
demonstrates
that
adsorption
was
happened
heterogeneous
surfaces
in
form
multilayer
chemisorption.
Electrostatic
potential
(ESP)
calculation
proves
contribution
hydroxyl
groups
capture
performance.
In
addition,
both
adsorbents
can
be
maintained
over
91%
after
four
cyclic
experiments
which
ensures
their
recyclability
for
further
practical
applications.
Crystal Growth & Design,
Год журнала:
2023,
Номер
23(6), С. 4701 - 4719
Опубликована: Май 22, 2023
The
design
and
synthesis
of
crystalline
porous
materials
is
a
frontier
research
area,
especially
in
photo(electro)catalysis,
due
to
their
fascinating
semiconducting
properties.
In
recent
years,
metal–organic
frameworks
(MOFs)
covalent
organic
(COFs)
have
received
much
attention
heterogeneous
catalysis,
ranging
from
chemical
conversion
solar
energy
production.
addition,
COFs
with
well-ordered
framework
structures
been
extensively
studied
the
field
photocatalysis
for
water
splitting
produce
hydrogen
(H2)
oxygen
(O2).
Due
synergistic
effect
crystallinity,
porosity,
conjugation
frameworks,
widely
explored.
this
Review,
we
aim
discuss
crystallinity
on
generation
via
photocatalytic
splitting.
We
then
briefly
summarize
basic
mechanisms
generation,
advantages
semiconductors
over
amorphous
materials,
strategic
designs
COFs.
state-of-the-art
developments
as
evolution
systematically
reviewed.
believe
that
understanding
structure–property
relationship
performance
respect
long-range
structural
order
essential
further
development
innovative
COF-based
real-time
applications.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(18)
Опубликована: Дек. 24, 2023
Abstract
Crystalline
porous
organic
polymers
(CPPs)
or
covalent
frameworks
(COFs),
are
composed
by
light
elements
linked
bonds.
Despite
the
remarkable
progress
attained,
there
still
bottlenecks
limiting
further
development,
some
of
them
related
to
presence
defects
during
their
synthesis
as
well
in‐depth
understanding
structure
active
centers
and/or
details
reaction
mechanism.
Indeed,
very
often
proposed
structures
far
from
reality
because
and
disorders
have
not
been
considered.
The
present
review
provides
an
illustrative
overview
“defects
disorder
in
COFs”.
These
include
those
only
generated
manipulation
COFs,
but
also
lack
crystallinity,
stacking
network
vacancies.
starts
giving
general
remarks
on
COFs
synthetic
methods,
followed
different
methods
play
manage
defects,
how
minimize
take
advantage
gain
new
properties
applications.
Selected
characterization
techniques
quantify
defective
sites
presented.
Finally,
challenges
future
opportunities
field
summarized
last
section.
Langmuir,
Год журнала:
2023,
Номер
39(45), С. 16069 - 16078
Опубликована: Окт. 17, 2023
Developing
efficient
adsorbent
materials
for
iodine
scavenging
is
essential
to
mitigate
the
threat
of
radioactive
causing
adverse
effects
on
human
health
and
environment.
In
this
context,
we
explored
N-rich
two-dimensional
covalent
organic
frameworks
(COFs)
with
diverse
functionalities
capture.
The
pyridyl-hydroxyl-functionalized
triazine-based
novel
5,5',5″-(1,3,5-triazine-2,4,6-triyl)tris(pyridine-2-amine)
(TTPA)-COF
possesses
high
crystallinity
(crystalline
domain
size:
24.4
±
0.6
nm)
porosity
(specific
BET
surface
area:
1000
90
m2
g-1).
TTPA-COF
exhibits
superior
vapor-phase
adsorption
(4.43
0.01
g
g-1)
compared
analogous
COF
devoid
pyridinic
moieties,
2,4,6-tris(4-aminophenyl)-1,3,5-triazine
(TAPT)-COF.
capture
by
due
enhanced
binding
affinity
conferred
extra
active
sites.
Furthermore,
crucial
role
long-range
order
in
porous
adsorbents
has
been
experimentally
evidenced
comparing
performance
vapor
an
amorphous
network
polymer
having
identical
functionalities.
We
have
also
demonstrated
ability
from
aqueous
phases.
mechanism
heteroatom-rich
framework
elucidated
through
FTIR,
XPS,
Raman
spectral
analyses.
present
study
highlights
need
structural
tweaking
building
blocks
toward
rational
construction
advanced
functional
a
task-specific
application.
